Paper-making machinery.



No. 828,167. PATENTED AUG. 7, 1906.

B. WOLF & H. E. TIDMARSH. PAPER MAKING MACHINERY.

APPLICATION FILED NOV. 10, 1905.

3 SHEETS-SHEET 1.

3 SHEETSSHEET 2.

PATENTED AUG. '7

R. B. WOLF & H. E. TIDMARSH. PAPER MAKING MACHINERY. APPLICATION ITILED NOY.10,1905.

we/ 1,2321? 7. 57% $46k? PATENTED AUG. R. B. WOLF & H.,E. TIDMARSH.

PAPER MAKING MACHINERY. APPLICATION FILED NOV.10,1905.

3 SHEETS-SHEET 3 UNi STATES .Eivr orrron.

ROBERT P). \VOLF AND HARRY E. TIDMARSH, OF SAND HILL, NEW YORK.

PAPER-MAKING MACHINERY.

Specification of Letters Patent Patented Aug. 7, 1906.

Application filed November 10,1905. Serial. No- 286.670-

.l'o all whom it may concern:

Be it known that we, RonEnT B. VVOLF and HARRY E. 'limiansu, citizens of the United States, residing at Sandy Hill, county of Washington, State of New York, have invented certain new and useful Improvements in Paper-Making M achinery and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to paper-making machines, and more particularly to pulp presses, wetemachines, and'the like, and has for its objects to provide means for preventing leakage of stock from the stockvat to the white-Water chamber past the sleeve or sleeves with which the cylinder mold or screen is provided and through which the water drawn through the cylinder mold or screen passes to the white-water chamber.

in the accompanying drawings, which illustrate the application of the invention to the stockat and cyliruler-nmld of a wetmachinc, Figure l is a plan view of the apparatus, part of the same being shown in section to better illustrate the invention. Fig. 2 is a longitudinal sectional view of the stockvat, showing the cylinder-mold in elevation. Fig. 3 is a transverse section of a slightlymodiiied form of mechanism. Fig. 4 is a front elevation of one of the collars or partitions which formthe illtl'lllflllitt) chamber, showing a packing-ring applied thereto. Fig. 5 is an end elevation thereof.

in the particular embodiment of the invention illustrated in the drawings, N represents the stock-vat of a standard wet-machine, which is adapted to receive the ground woodpul sulfite-pulp, or paper-pulp admixed with large quantities of water and to deliver the pulp largely freed from the water to the felt R, which runs in contact with the sur face of the cylinder-mold A, and thence over the couch-roll O, as will be understood by those skilled. in the art. It is desired to have the white water, which passes through the wire-cloth with which the cylinder-mold is covered, free from pulp or pa er fibers, as large quantities of it cannot e used over again, and the fibers it holds in suspension are in consequence lost.

In machines of this general character it has been attempted to prevent leakage between the stock-vat and the white-water chamber by roviding the end or ends of the cylindermo d with a flanged offset which coo crates with a stationary ring on the end wal of the vat, which is usually covered with a felt ring,

' thereby forming a telescoping joint. This in some measure prevents leakage past the end of the cylinder-mold into the adjacent whitewater chamber. This arrangement, however, has not roved effective, as more or less of the stoc eventually works under the felt Washer and through the telescoping joint into the White-Water chamber. The essential object of the present invention is to obviate this leakage by providing an intermediate chamber between the stock-vat and the white-water chamber, which effectively traps any leakage or seepage from either the stoc vat or the white-water chamber and prevents any admixture of the materials contained in the vat and chamber. to reduce leakage from the stock-vat to the intermediate chamber and also from the white-water chamber to the intermediate chamber to a minimum, suitable packing means are priwided between the collars which constitute the walls of the intermediate chamber and the sleeve of the cylindermold, through which the white water is discharged from the interior of the cylinder-mold to the white-water chamber.

The vat N is formed within a rectangular tank built from any suitable material and is defined by the side walls and bottom of the tank and two transverse partitions located intermediate the ends of the tank proper. Toward each end of the tank there is formed a white-water chamber M, said white-water chambers being adapted to receive the white water drawn through the meshes of the screen-surface of the cylinder-mold by way of the hollow axial sleeves B. Each of the sleeves B at the point where it joins the head of the cylinder-mold is provided with an offset shoulder H, and at its end which projects within the White-water chamber with an annular flange U, having an inturned rim which forms a eripheral edge substantially )arallel with t e c lindrical surface of shoulder ll.

Between t 1e stock-vat N and each of the white-water chambers M, is located an intermediate chamber J, which is defined by the extended side walls and bottom of the whitewater chamber and two collars or partitions F and I), each of which is divided along a horizontal line and is provided with a round opening to embrace the sleeve B, said collars In order or partitions F and D forming the front and rear walls of the intermediate chamber afore said.

The openings in the partitions F and D are made somewhat larger than the diameter of the sleeve B, and suitable spacing-blocks B are interposed between the surface of the sleeve and the interior walls of the o )enings aforesaid to provide a series of free e annels along the sleeve into the intermediate chamber J. The collars or partitions F and D are preferably made of wood or other suitable material, and the sections of each are fastened together around the sleeve B, so that the collars or partitions may be removed and inserted with the cylinder. lars F and D is held against suitable guides or cleats T by any suitable means-such, for example, as a spreading device. or wedge-so that when the cylinder isin place leakage past the edge of the collars or partitions is prevented.

Fitted between the face of the shoulder H 2 5 ring E, which may,

collar D and the end is an annular packingif desired, be made up of a series of sections to completely fill the space between said shoulder and said wall andin a large measure prevent leakage of stock from vat N past the shoulder H. The opening in 0 the packing-ring E is made of substantially the same diameter as the opening through the collar or partition D, so as to give free passage to tie intermediate assage J of any material that should leak t irough the joints 3 5 formed by the contacting face of the packingring E with the wall D or the shoulder H. In order to insure a still more effective sealing of the joint between the end of the cylinder-mold and the intermediate chamber J, 0 there is provided a packing-sleeve of felt which encircles and engages the peripheral edges of the packing-ring E and the shoulder H.

To prevent leakage from the white-water 4 5 chamber M into the intermediate chamber J, there is provided an annular packing G, which is preferably fastened to the square collar or| partition F in substantially the same manner that packing-ring E is secured 5o: to collar or partition D. Said packing G is adapted to engage the edge of-the flange U on the end of the sleeve B, so as to form a rac- 'tically water-tight joint therewith, as Wlll be apparent from Figs. 1 and 2, "To render the 5 5 joint thus formed still more secure, a sleeve of felt O is sli ped over theperiphery of the packing (land the flange U, so as to overlie the joint between the same, and said 0 may be secured either to to the flange U, as desired.

The cylinder-mold is, as will be understood, built around the usual shaft, which is support ed in bearings C C, which may be located either inside or outside the whitewater chamber or chambers M or in any other desired position.

sleeve the packing G or Each of the col- Below the white-water chambers at the respective ends of the tank are formed chambers L L, into which the respective intermediate chambers J discharge, and said chambers L are preferably connected by a pipe, spout, or other suitable outlet X to a stocktank or other receptacle, from which the pul may be again delivered into the stock-vat h. Connection between ,each of the chambers L and the stock-vat N may also be provided by suitable passages between the respective chambers, which passages are contro led by valves Y. When said valves Y are opened, the material in stock-vat N will be drained into the lower chambers L and thence to the stock-chest or other suitable receptacle. This draining of the stock-vat N becomes necessary at times for washing or for other purposes, and by taking the stock from said vat by way of the lower chambers L into the stock-chest much of the waste which is occasioned by the present methods of emptying the'vat on the fioor under the machine is obviated.

With the arrangement of appartaus hereinbefore described it will be apparent that leakage of stock from the stock-vat into the white-water chamber, except in such small qluantities as might pass through the wire- 0 0th of the cylinder-mold, is absolutely revented, as any of the stock which ma eak past the joint between the shoulder T l, the

acking-sleeve P, and packing-ring E is deivered to the intermediate chamber J, from which it escapes to the lower chamber L and thence to the stock chest, from which it is ultimately returned to the vat N. Likewise the white water is prevented from leaking into the intermediate chamberJ by the interposition of the packing members and G, so that practically all ered to the chambers M free from contamination and is conducted therefrom as needed.

It will be noted that the collars or partitions D are of less height than the side walls of the stack-tank N, so as to constitute what is, in effect, a dam separating the intermediate chambers J from the stock-vat. In addition to the main object subserved b Y the intermediate chamber Jto wit, to provide an effective trap for leakage from the stock-vat or from the whitewater chamber-the inter- I mediate chamber may also be employed as an overflow for the stock-vat N in case it is i desired to raise the stock or i levelin said vat, either to stir up the stock or to raise the level sufficiently to prevent the sheet of ulp or paper from dropping oil the felt R, which travels arounrll the couch-roll O,

, or to cause the sheet to again follow the felt j afterit has been separated therefrom or for any other reason which during the operation of the machine renders it necessary or desir- I able to raise the stock in the vat N above the l level defined by the top edge of the collar or pulp to a higher e the whitewater is deliv- IIO artition D. The square collar or partition is, however, carried as high as the top of the stock-vat in order to prevent any of the material in the latter from passing into the white-water chamber when the level of the stock is raised.

The intermediate or overflow chamber J may be drained either from the bottom or pulp and water may be allowed to remain at any desired level therein by means of an adjustable or a fixed overflow either inside of or outside of said chamber J. The overflowchamber may also be supplied with water or liquid of any kind maintained under sufficient head to tend to force the liquid from said chamber into both the stock-vat N and white-water chamber M By maintaining ahigher pressure or head in the chamber J than is maintained in either the white-water chamber M or the stock-vat N leakage into the intermediate chamber is wholly obviated, and as a matter ofcourse leakage of stock from the stock-vat into the white-water chamber is absolutely precluded.

While the invention has been shown and described as applied to'both ends of the tank and cylinder mold, it will be apparent that in some cases it may be desirable toblank off one end of the mold, thereby dispensing with the arrangement of sleeve, packing-rings, intermediate chamber and white-water chamber at that end and applying the invention to the other end of the apparatus only. Furthermore,.it will be understood that the details of construction and the relative arrangement of the parts may be varied without departing from the spirit of the invention. For example, instead of the particular packing means to prevent leakage into the intermediate chamber, as hereinbefore described,

packing-glands or stuffing-boxes of the ordinary kind may be employed also, instead of constructing the white-water chamber and intermediate chamber within the main tank these parts may be built upon or attached to the cylinder-vat proper.

In case the false bottomV is used, as shown in Fig. 3, the space between the same and the cylinder-mold A may be drained into the lower chamber L, as hereinbefore described in connection with the vat N, whenever it is found necessary either because of the cylinder blocking with thick stock or for other causes.

While the invention has been described with particular reference to the cylinder-mold of a wet-machine, it is to be understood that it is not limited to such application, as the intern'iediate chamber between the screenvat and the chamber which receives the water after passing through the screen, as well as the particular packing means hereinbefore described, may be applied with like advantages to any apparatus of this general character-s'uch, for example, as water-screens, pulp-reducers, and the like.

What we claim is- 1. The combination of a stock-vat, a cylinder-mold therein, a white-water chamber in communication with the interior of the cylinder-mold, and an intermediate chamber between the stock-vat and the white-water chamber to prevent leakage between said vat and chamber.

2. The combination of a stock-vat, a cylinder-mold having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, and an intermediate chamber between the vat and the white-water chamber, said sleeve passing through said intermediate chamber.

3. The com ination of astock-vat, a cylinder-mold having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, an intermediate chamber between the vat and the white-water chamber, and packing between the wall of the intermediate chamber and the sleeve. 4. The combination of a stockvat, a cylinder-mold having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, an intermediate chamber between the vat and the white-water chamber, and packings between the walls of the-intermediate chamber and the sleeve to prevent leakage from the vat and white-water chamber respectively into the intermediate or overflow cham ber.

5. The combination of a stock-vat, a cylinder-mold therein having an axial sleeve and a shoulder between the sleeve and the cylinder end, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, an intermediate chamber between the vat and white-water chamber, and a packing collar or washer surrounding said sleeve and engaging the wall of the intermediate chamber and the shoulder of,

the cylinder respectively.

6. The combination of a stock-vat, a cylin der-mold therein having an axial sleeve and a shoulder between the sleeve and the cylinder end, a white-water chamber connnunieating with the interior of the cylinder-mold by way of said sleeve, an intermediate chamber between the vat and whitewater chamber, a packing collar or washer surrounding said sleeve and engaging the wall of the intermediate chamber and the shoulder of the cylinder respectively, and a packing-sleeve engaging the packing-collar and shoulder of the cylinder respectively and overlying the joint between the two.

7. The combination of a stock-vat, a cylinder-mold having an axial sleeve provided with a shoulder at its junction with the cylinder and a flange at its outer end, a whi te-water chamber communicating with the interior of the cylinder by way of said sleeve, an

intermediate chamber between the vat and the white-water chamber through which said sleeve passes, and packing means interposed between the walls of the intermediate chamber and the shoulder and flange respectively of the sleeve.

8. The combination of a stock-vat, a cylinder-mold having an axial sleeve provided with a shoulder at its junction with the cylinder and a flange at its outer end, a white-water chamber communicating with the interior of the cylinder by way of said sleeve, an intermediate chamber between the vat and the white-water chamber through which said sleeve asses, aching-rings located between the wa ls of t e intermediate chamber and the shoulder and flange respectively of the sleeve, and packing-sleeves closing the oints between the packing-rings and the shoulder and flange respectively.

9. The combination of a stock-vat, a cylinder-mold therein, a white-water chamber in communication with the cylinder-mold, an intermediate chamber between the stock-vat and the white-water chamber to receive any leakage from the stock-vat or the white-water chamber, and means for discharging the collected seepage from said intermediate chamber.

10. The combination of a stock-vat, a cylinder-mold therein, a white-water chamber in communication with the cylinder-mold, an intermediate chamber between the stock-.vat and the white-water chamber to receive any leakage from the stock-vat or the white-water chamber, and a connection for said intermediate chamber to a stock-chest or other storage-receptacle.

11. The combination of a stock-vat, a cylinder-mold therein having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, and an intermediate chamber between the vat and the white-water chamber, the wall. so arating said intermediate chamber from the vat being lower than the vat sides to permit the stock to overflow into said chamber when the level of the stock is raised in said vat. I

12. The combination of a stock-vat, a cylinder-mold therein having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by way of said sleeve, an intermediate chamber between the vat and the white-water chamber, the wall separating said intermediate chamber from the vat being lower than the vat sides to permit the stock to overflow into said chamber when the level of the stock is raised in said vat, and means for conducting the stock from said intermediate chamber to a stock-chest or other receptacle.

13. The combination of a stock-vat, a cylinder-mold therein having an axial sleeve, a white-water chamber communicating with the interior of the cylinder-mold by Way of said sleeve, an. intermediate chamber between the vat and the whitewater chamber, the wall between said intermediate chamber and the stock-vat being lower than the vat sides to permit the stock to overflow into said chamber when the level of the stock is raised in said vat, and packing means between the other wall of said intermediate chamber and the end of the axial sleeve to prevent leakage between the intermediate chamber and the white-water chamber.

14. The combination of a stock-vat, a cylinder-mold therein having an axial sleeve, a

white-water chamber communicating with the interior of the cylinder-mold byway of said sleeve, an intermediate chamber between the vat and the white-water chamber, the wall between said intermediate chamber and the stock-vat being lower than the vat sides to permit the stock to overflow into said chamber when the level of the stock is raised in said vat, a packing-ring between the other wall of the intermediate chamber and the flanged end of the axial sleeve and a packingsleeve embracing the peripheral edges of the packing-ring and flange.

In testimony whereof we allix our signatures in presence of two witnesses.

ROBERT B. WOLF. HARRY E. TIDMARSH. Witnesses:

W. L. SAWYER, L. R. NlOI AREN. 

